Expand on the rx signal loss documentation.
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docs/Rx.md
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docs/Rx.md
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@ -133,10 +133,20 @@ The software has signal loss detection which is always enabled. Signal loss det
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The `rx_min_usec` and `rx_max_usec` settings helps detect when your RX stops sending any data, enters failsafe mode or when the RX looses signal.
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By default, when the signal loss is detected the FC will set pitch/roll/yaw to the value configured for `mid_rc`. The throttle will be set to the value configured for `rx_min_usec`. Unless otherwise configured all AUX channels will HOLD the last value received. You can use the `rxfail` cli command to change this behaviour.
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By default, when the signal loss is detected the FC will set pitch/roll/yaw to the value configured for `mid_rc`. The throttle will be set to the value configured for `rx_min_usec`.
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Signal loss can be detected when:
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1. no rx data is received (due to radio reception, recevier configuration or cabling issues).
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2. using Serial RX and receiver indicates failsafe condition.
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3. using any of the first 4 stick channels do not have a value in the range specified by `rx_min_usec` and `rx_max_usec`.
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#### `rxfail`
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The `rxfail` command is used to configure per-aux-channel rx-loss behaviour. Unless otherwise configured all AUX channels will HOLD the last value received. You can use the `rxfail` cli command to change this behaviour, a channel can either HOLD it's last value or be SET to a specific value.
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The rxfail command can be used in conjunction with mode ranges to trigger various actions.
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The `rxfail` command takes 3 arguments.
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* Index of aux channel (AUX1 = 0, AUX2 = 1,...)
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* A mode ('h' = HOLD, 's' = SET)
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@ -154,6 +164,7 @@ To make AUX8 hold it's value when RX loss is detected:
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In the above example the '1500' will be ignored.
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#### `rx_min_usec`
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The lowest channel value considered valid. e.g. PWM/PPM pulse length
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